Re: Machining Tips From John at Stellar Machine Inc.
- From: brewertr@xxxxxxx
- Date: Sun, 07 Sep 2008 16:28:36 -0700
On Sun, 7 Sep 2008 15:35:33 -0700 (PDT), robinstoddart@xxxxxxxxx
wrote:
On Sep 7, 5:26 pm, brewe...@xxxxxxx wrote:
Lots of non-CNC machines run automatic cycles being hand feed. CNC's
are no different, you just have to be aware of the machines position,
give plenty of time to load/unload safely without rushing. If an
operator is late loading hit feed hold button or skip the cycle all
together.
Among the most irresponsible and dangerous pieces of information I've
seen on the internet in a long time. Way to go, "machinist".
Calm down there big guy before you blow a cork.
Tom, tell us about all the hand-fed automated cycles that don't
include appropriate guards to insure that the operator doesn't get
drilled, punched, sawed, sheared, electrocuted, burned, painted,
poisoned or frozen that you've come across which were also legally
safe to operate (according to OHSA)?
Not all VMC's, HMC's, CNC Mills, Vertical Mills, Horizontal Mills, CNC
Gantry Mills, CNC Routers, Centerless Grinders, CNC lathes, Manual
Lathes, Threading Lathes, Tool Room Mills, Tool Room Lathes, Turret
Lathes, Chucker style CAM operated Lathes etc. are built with guards
and/or door lockouts. Because not all machining operations are
inherently dangerous to the operator if operated properly.
Simply that the program is still running while the machine doors are
open seems to be a violation, no?
I did not say any such thing in the post you are responding to. I made
a comment about bypassing the door interlock in another post and if
you read it I said everything is OK till someone gets hurt. That is a
far cry from indorsing that practice. If a person removes guards and
door interlocks they accept responsibility for doing so.
I only have experience with press operation, but what you're
suggesting is illegal and very dangerous - and absolutely inexcusable.
Having experience around punch presses I can understand your being
adamant about safety however I haven't nor would I ever propose to
short cut or bypass safeties on a punch press.
What I said is it works in limited cases. One case not to use it is if
it is possible for the operator to be injured.
Don't forget that you might be writing a production program for
someone who isn't quite as capable of keeping their mind in line after
a couple thousand cycles.
DUH!
Also impressive to see the posts agreeing with this technique. This
industry is full of monkeys (apparently monkeys who can type too).
Apparently you have limited experience as well as reading &
comprehension issues.
Regards,
Robin
Tom
.
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